<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="">
        <input type="text"> <!-- 文本框 -->
    <input type="submit" value="搜索">
    </form>
    <ul>
        <li><a href="tableA.html" target="content_table">A班</a></li>
        <li><a href="tableB.html" target="content_table">B班</a></li>
    </ul>
    <iframe name="content_table" frameborder="0" width="600" height="600"
    scrolling="no" src="table.html"></iframe><!-- 导入表格  -->

</body>
</html>